1. The problem states that Aisha buys 12 rubbers for 180. We need to find the cost of 15 rubbers. 2. First, find the cost of one rubber by dividing the total cost by the number of rubbers: $$\text{Cost per rubber} = \frac{180}{12}$$ 3. Simplify the fraction: $$\text{Cost per rubber} = \frac{\cancel{180}}{\cancel{12}} = 15$$ 4. Now, multiply the cost per rubber by 15 to find the total cost for 15 rubbers: $$\text{Total cost} = 15 \times 15 = 225$$ 5. Therefore, it would cost Aisha 225 to buy 15 rubbers.